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Golang promql.ParseMetricSelector函數代碼示例

本文整理匯總了Golang中github.com/prometheus/prometheus/promql.ParseMetricSelector函數的典型用法代碼示例。如果您正苦於以下問題：Golang ParseMetricSelector函數的具體用法？Golang ParseMetricSelector怎麽用？Golang ParseMetricSelector使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。


在下文中一共展示了ParseMetricSelector函數的10個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: dropSeries

func (api *API) dropSeries(r *http.Request) (interface{}, *apiError) {
	r.ParseForm()
	if len(r.Form["match[]"]) == 0 {
		return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
	}
	fps := map[model.Fingerprint]struct{}{}

	for _, lm := range r.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(lm)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
		for fp := range api.Storage.MetricsForLabelMatchers(matchers...) {
			fps[fp] = struct{}{}
		}
	}
	for fp := range fps {
		api.Storage.DropMetricsForFingerprints(fp)
	}

	res := struct {
		NumDeleted int `json:"numDeleted"`
	}{
		NumDeleted: len(fps),
	}
	return res, nil
}
開發者ID:brutus333，項目名稱:prometheus，代碼行數:27，代碼來源:api.go

示例2: series

func (api *API) series(r *http.Request) (interface{}, *apiError) {
	r.ParseForm()
	if len(r.Form["match[]"]) == 0 {
		return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
	}
	fps := map[clientmodel.Fingerprint]struct{}{}

	for _, lm := range r.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(lm)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
		for _, fp := range api.Storage.FingerprintsForLabelMatchers(matchers) {
			fps[fp] = struct{}{}
		}
	}

	metrics := make([]clientmodel.Metric, 0, len(fps))
	for fp := range fps {
		if met := api.Storage.MetricForFingerprint(fp).Metric; met != nil {
			metrics = append(metrics, met)
		}
	}
	return metrics, nil
}
開發者ID:gitter-badger，項目名稱:prometheus，代碼行數:25，代碼來源:api.go

示例3: series

func (api *API) series(r *http.Request) (interface{}, *apiError) {
	r.ParseForm()
	if len(r.Form["match[]"]) == 0 {
		return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
	}
	res := map[model.Fingerprint]metric.Metric{}

	for _, lm := range r.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(lm)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
		for fp, met := range api.Storage.MetricsForLabelMatchers(
			model.Earliest, model.Latest, // Get every series.
			matchers...,
		) {
			res[fp] = met
		}
	}

	metrics := make([]model.Metric, 0, len(res))
	for _, met := range res {
		metrics = append(metrics, met.Metric)
	}
	return metrics, nil
}
開發者ID:yershalom，項目名稱:prometheus，代碼行數:26，代碼來源:api.go

示例4: dropSeries

func (api *API) dropSeries(r *http.Request) (interface{}, *apiError) {
	r.ParseForm()
	if len(r.Form["match[]"]) == 0 {
		return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
	}

	numDeleted := 0
	for _, s := range r.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(s)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
		n, err := api.Storage.DropMetricsForLabelMatchers(context.TODO(), matchers...)
		if err != nil {
			return nil, &apiError{errorExec, err}
		}
		numDeleted += n
	}

	res := struct {
		NumDeleted int `json:"numDeleted"`
	}{
		NumDeleted: numDeleted,
	}
	return res, nil
}
開發者ID:amorken，項目名稱:prometheus，代碼行數:26，代碼來源:api.go

示例5: ServeHTTP

func (fed *Federation) ServeHTTP(w http.ResponseWriter, req *http.Request) {
	req.ParseForm()

	metrics := map[model.Fingerprint]metric.Metric{}

	for _, s := range req.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(s)
		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		for fp, met := range fed.Storage.MetricsForLabelMatchers(matchers...) {
			metrics[fp] = met
		}
	}

	format := expfmt.Negotiate(req.Header)
	w.Header().Set("Content-Type", string(format))

	enc := expfmt.NewEncoder(w, format)

	protMetric := &dto.Metric{
		Label:   []*dto.LabelPair{},
		Untyped: &dto.Untyped{},
	}
	protMetricFam := &dto.MetricFamily{
		Metric: []*dto.Metric{protMetric},
		Type:   dto.MetricType_UNTYPED.Enum(),
	}

	for fp, met := range metrics {
		sp := fed.Storage.LastSamplePairForFingerprint(fp)
		if sp == nil {
			continue
		}

		// Reset label slice.
		protMetric.Label = protMetric.Label[:0]

		for ln, lv := range met.Metric {
			if ln == model.MetricNameLabel {
				protMetricFam.Name = proto.String(string(lv))
				continue
			}
			protMetric.Label = append(protMetric.Label, &dto.LabelPair{
				Name:  proto.String(string(ln)),
				Value: proto.String(string(lv)),
			})
		}
		protMetric.TimestampMs = (*int64)(&sp.Timestamp)
		protMetric.Untyped.Value = (*float64)(&sp.Value)

		if err := enc.Encode(protMetricFam); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return

		}
	}
}
開發者ID:remotesyssupport，項目名稱:prometheus，代碼行數:59，代碼來源:federate.go

示例6: series

func (api *API) series(r *http.Request) (interface{}, *apiError) {
	r.ParseForm()
	if len(r.Form["match[]"]) == 0 {
		return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
	}

	var start model.Time
	if t := r.FormValue("start"); t != "" {
		var err error
		start, err = parseTime(t)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
	} else {
		start = model.Earliest
	}

	var end model.Time
	if t := r.FormValue("end"); t != "" {
		var err error
		end, err = parseTime(t)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
	} else {
		end = model.Latest
	}

	var matcherSets []metric.LabelMatchers
	for _, s := range r.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(s)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
		matcherSets = append(matcherSets, matchers)
	}

	q, err := api.Storage.Querier()
	if err != nil {
		return nil, &apiError{errorExec, err}
	}
	defer q.Close()

	res, err := q.MetricsForLabelMatchers(api.context(r), start, end, matcherSets...)
	if err != nil {
		return nil, &apiError{errorExec, err}
	}

	metrics := make([]model.Metric, 0, len(res))
	for _, met := range res {
		metrics = append(metrics, met.Metric)
	}
	return metrics, nil
}
開發者ID:amorken，項目名稱:prometheus，代碼行數:54，代碼來源:api.go

示例7: series

func (api *API) series(r *http.Request) (interface{}, *apiError) {
	r.ParseForm()
	if len(r.Form["match[]"]) == 0 {
		return nil, &apiError{errorBadData, fmt.Errorf("no match[] parameter provided")}
	}

	var start model.Time
	if t := r.FormValue("start"); t != "" {
		var err error
		start, err = parseTime(t)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
	} else {
		start = model.Earliest
	}

	var end model.Time
	if t := r.FormValue("end"); t != "" {
		var err error
		end, err = parseTime(t)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
	} else {
		end = model.Latest
	}

	res := map[model.Fingerprint]metric.Metric{}

	for _, lm := range r.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(lm)
		if err != nil {
			return nil, &apiError{errorBadData, err}
		}
		for fp, met := range api.Storage.MetricsForLabelMatchers(
			start, end,
			matchers...,
		) {
			res[fp] = met
		}
	}

	metrics := make([]model.Metric, 0, len(res))
	for _, met := range res {
		metrics = append(metrics, met.Metric)
	}
	return metrics, nil
}
開發者ID:RMeharg，項目名稱:prometheus，代碼行數:49，代碼來源:api.go

示例8: federation

func (h *Handler) federation(w http.ResponseWriter, req *http.Request) {
	h.mtx.RLock()
	defer h.mtx.RUnlock()

	req.ParseForm()

	var matcherSets []metric.LabelMatchers
	for _, s := range req.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(s)
		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		matcherSets = append(matcherSets, matchers)
	}

	var (
		minTimestamp = h.now().Add(-promql.StalenessDelta)
		format       = expfmt.Negotiate(req.Header)
		enc          = expfmt.NewEncoder(w, format)
	)
	w.Header().Set("Content-Type", string(format))

	q, err := h.storage.Querier()
	if err != nil {
		federationErrors.Inc()
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	defer q.Close()

	vector, err := q.LastSampleForLabelMatchers(h.context, minTimestamp, matcherSets...)
	if err != nil {
		federationErrors.Inc()
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	sort.Sort(byName(vector))

	var (
		lastMetricName model.LabelValue
		protMetricFam  *dto.MetricFamily
	)
	for _, s := range vector {
		nameSeen := false
		globalUsed := map[model.LabelName]struct{}{}
		protMetric := &dto.Metric{
			Untyped: &dto.Untyped{},
		}

		for ln, lv := range s.Metric {
			if lv == "" {
				// No value means unset. Never consider those labels.
				// This is also important to protect against nameless metrics.
				continue
			}
			if ln == model.MetricNameLabel {
				nameSeen = true
				if lv == lastMetricName {
					// We already have the name in the current MetricFamily,
					// and we ignore nameless metrics.
					continue
				}
				// Need to start a new MetricFamily. Ship off the old one (if any) before
				// creating the new one.
				if protMetricFam != nil {
					if err := enc.Encode(protMetricFam); err != nil {
						federationErrors.Inc()
						log.With("err", err).Error("federation failed")
						return
					}
				}
				protMetricFam = &dto.MetricFamily{
					Type: dto.MetricType_UNTYPED.Enum(),
					Name: proto.String(string(lv)),
				}
				lastMetricName = lv
				continue
			}
			protMetric.Label = append(protMetric.Label, &dto.LabelPair{
				Name:  proto.String(string(ln)),
				Value: proto.String(string(lv)),
			})
			if _, ok := h.externalLabels[ln]; ok {
				globalUsed[ln] = struct{}{}
			}
		}
		if !nameSeen {
			log.With("metric", s.Metric).Warn("Ignoring nameless metric during federation.")
			continue
		}
		// Attach global labels if they do not exist yet.
		for ln, lv := range h.externalLabels {
			if _, ok := globalUsed[ln]; !ok {
				protMetric.Label = append(protMetric.Label, &dto.LabelPair{
					Name:  proto.String(string(ln)),
					Value: proto.String(string(lv)),
				})
			}
		}
//.........這裏部分代碼省略.........
開發者ID:prometheus，項目名稱:prometheus，代碼行數:101，代碼來源:federate.go

示例9: federation

func (h *Handler) federation(w http.ResponseWriter, req *http.Request) {
	h.mtx.RLock()
	defer h.mtx.RUnlock()

	req.ParseForm()

	metrics := map[model.Fingerprint]metric.Metric{}

	for _, s := range req.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(s)
		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		for fp, met := range h.storage.MetricsForLabelMatchers(matchers...) {
			metrics[fp] = met
		}
	}

	format := expfmt.Negotiate(req.Header)
	w.Header().Set("Content-Type", string(format))

	enc := expfmt.NewEncoder(w, format)

	protMetric := &dto.Metric{
		Label:   []*dto.LabelPair{},
		Untyped: &dto.Untyped{},
	}
	protMetricFam := &dto.MetricFamily{
		Metric: []*dto.Metric{protMetric},
		Type:   dto.MetricType_UNTYPED.Enum(),
	}

	for fp, met := range metrics {
		globalUsed := map[model.LabelName]struct{}{}

		sp := h.storage.LastSamplePairForFingerprint(fp)
		if sp == nil {
			continue
		}

		// Reset label slice.
		protMetric.Label = protMetric.Label[:0]

		for ln, lv := range met.Metric {
			if ln == model.MetricNameLabel {
				protMetricFam.Name = proto.String(string(lv))
				continue
			}
			protMetric.Label = append(protMetric.Label, &dto.LabelPair{
				Name:  proto.String(string(ln)),
				Value: proto.String(string(lv)),
			})
			if _, ok := h.globalLabels[ln]; ok {
				globalUsed[ln] = struct{}{}
			}
		}

		// Attach global labels if they do not exist yet.
		for ln, lv := range h.globalLabels {
			if _, ok := globalUsed[ln]; !ok {
				protMetric.Label = append(protMetric.Label, &dto.LabelPair{
					Name:  proto.String(string(ln)),
					Value: proto.String(string(lv)),
				})
			}
		}

		protMetric.TimestampMs = (*int64)(&sp.Timestamp)
		protMetric.Untyped.Value = (*float64)(&sp.Value)

		if err := enc.Encode(protMetricFam); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	}
}
開發者ID:nicr9，項目名稱:prometheus，代碼行數:77，代碼來源:federate.go

示例10: federation

func (h *Handler) federation(w http.ResponseWriter, req *http.Request) {
	h.mtx.RLock()
	defer h.mtx.RUnlock()

	req.ParseForm()

	fps := map[model.Fingerprint]struct{}{}

	for _, s := range req.Form["match[]"] {
		matchers, err := promql.ParseMetricSelector(s)
		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		for fp := range h.storage.MetricsForLabelMatchers(
			model.Now().Add(-promql.StalenessDelta), model.Latest,
			matchers...,
		) {
			fps[fp] = struct{}{}
		}
	}

	var (
		minTimestamp = model.Now().Add(-promql.StalenessDelta)
		format       = expfmt.Negotiate(req.Header)
		enc          = expfmt.NewEncoder(w, format)
	)
	w.Header().Set("Content-Type", string(format))

	protMetric := &dto.Metric{
		Label:   []*dto.LabelPair{},
		Untyped: &dto.Untyped{},
	}
	protMetricFam := &dto.MetricFamily{
		Metric: []*dto.Metric{protMetric},
		Type:   dto.MetricType_UNTYPED.Enum(),
	}

	for fp := range fps {
		globalUsed := map[model.LabelName]struct{}{}

		s := h.storage.LastSampleForFingerprint(fp)
		// Discard if sample does not exist or lays before the staleness interval.
		if s.Timestamp.Before(minTimestamp) {
			continue
		}

		// Reset label slice.
		protMetric.Label = protMetric.Label[:0]

		for ln, lv := range s.Metric {
			if ln == model.MetricNameLabel {
				protMetricFam.Name = proto.String(string(lv))
				continue
			}
			protMetric.Label = append(protMetric.Label, &dto.LabelPair{
				Name:  proto.String(string(ln)),
				Value: proto.String(string(lv)),
			})
			if _, ok := h.externalLabels[ln]; ok {
				globalUsed[ln] = struct{}{}
			}
		}

		// Attach global labels if they do not exist yet.
		for ln, lv := range h.externalLabels {
			if _, ok := globalUsed[ln]; !ok {
				protMetric.Label = append(protMetric.Label, &dto.LabelPair{
					Name:  proto.String(string(ln)),
					Value: proto.String(string(lv)),
				})
			}
		}

		protMetric.TimestampMs = proto.Int64(int64(s.Timestamp))
		protMetric.Untyped.Value = proto.Float64(float64(s.Value))

		if err := enc.Encode(protMetricFam); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	}
}
開發者ID:RMeharg，項目名稱:prometheus，代碼行數:83，代碼來源:federate.go


注：本文中的github.com/prometheus/prometheus/promql.ParseMetricSelector函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。